> On Mar 12, 2016, at 12:25 PM, Anders Magnusson <[email protected]> wrote:
>
> Den 2016-03-12 kl. 17:45, skrev Clem Cole:
>> FYI: CDC and Cray's often used HyperChannel adapters; but I suspect have
>> long lost the info on it (very funky SW interface). Plus I doubt I still
>> have the code we developed for it (the HyperChannel was the other side of
>> the Tektronix TCP/IP for VMS implementation we did in the late 1970's). My
>> memory is that we dedicated a PP to talking to NOS, so there was very little
>> OS code. We spliced it into the RJE system and never did much beyond FTP
>> services for it; when I worked on it. I still talk with the guy that did
>> the the PP work for NOS (Stan Smith whom I will ask). The Cray port was
>> done by the NCAR guys working with our CDC and VMS code; but that was after
>> I was involved in the work.
>>
>> BTW: @ LCC we did some work with DG on their UNIX port; I somehow seem to
>> remember that the Eclipse family used the original AMD ethernet chip set on
>> their network adapter.
> DG-UX or MV/UX?
> The DG ethernet card has a 82586 on board. I have two of those cards, but
> unfortunately no programming specs. Anyone that has?
I have a copy of the datasheet -- I can email it if you like (2.4 MB). It's
the chip used on the DEC Pro series DECNA Ethernet card. It's a truly horrible
design, with errors that were well known as things to avoid 15 years earlier.
In the DECNA, you program it directly -- the card is basically just a bus
bridge plus a small local memory for the chip to talk to. If the DG boards are
like that, the 82586 datasheet will serve. But if there's machinery in between
that exposes a different API, you'd need those specs instead, of course.
Also: I've seen a NetBSD driver for it, which may also help understand how that
chip works.
paul
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